"The pope's 180-page encyclical on the environment, released on Thursday, is at its core a moral call for action on phasing out the use of fossil fuels. But it is also a document infused with an activist anger and concern for the poor, casting blame on the indifference of the powerful in the face of certain evidence that humanity is at risk following 200 years of misuse of resources. Up to now, he says, the world has accepted a 'cheerful recklessness' in its approach to the issue, lacking the will to change habits for the good of the Earth. 'Climate change is a global problem with grave implications: environmental, social, economic, political and for the distribution of goods,' the papal statement says. 'It represents one of the principal challenges facing humanity in our day.'"